Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-12-22
Phys.Rev.D58:057702,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 3 figures, ReVTeX, small explanatory notes added
Scientific paper
10.1103/PhysRevD.58.057702
In the simplest scheme for neutrino masses invoking a triplet of Higgs scalars there are two CP-even neutral Higgs bosons $H_i$ (i=1,2) and one massive pseudoscalar $A$. For some choices of parameters, the lightest $H_1$ may be lighter than the Standard Model Higgs boson. If the smallness of neutrino mass is due to the small value of the triplet expectation value, as expected in a seesaw scheme, the Higgs bosons may decay dominantly to the invisible neutrino channel. We derive limits on Higgs masses and couplings that follow from LEP I precision measurements of the invisible Z width.
Diaz Marco Aurelio
Garcia-Jareno M. A.
Restrepo Diego A.
Valle Jose W. F.
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